Fixed linktype settings form in administration. Now functioning using ajax sub forms.
Implemented EntityWithPluginBagsInterface for Flag.
Language Manager removed from Plugin managers.
Merge branch 'master' into language_manager
Merge pull request #13 from md-systems/language_manager

Language manager
Merge pull request #12 from md-systems/link-type-settings

Update link type settings in administration using ajax subform
Changed flag entity ID from flag_flag to just plain 'ol flag.
Fix for flaggable types not being stored.
Fixed missing entity_type field in Flag config schema.
Fixed missing default flag selection in view relationship.
Set default relationship for FlagViewsLinkField.
Fixed default relationship for flagged field, link field, and views filter.
Fixed broken Flag delete form, flagging confirm form, and ConfirmForm link type plugin.
Corrected the return of duplicate occurences of some entity flag types.
Initial versio of basic tests.
Provided basic tests and added documentation for changed code.
Fixed caching issue in basic tests, created permission role instead of multiple permission settings.
Removed unused Entity display.
Clean-up Flag entity doc blocks
Converted hook_help() paths to routes.